Abstract
The results of our investigations on the formation of Charge-transfer(CT) complex and the photoinduced electron transfer between donor and acceptor molecules embedded in a monolayer at the air/water interface are presented. The ground state CT interaction (facilitated through interfacial effects) between the donor (oxacyanine dye) and the acceptor (TCNQ) leads to the appearance of a broad band (centered at 480 nm) in the reflection spectrum. In addition, the CT band was found to be fluorescent and could be excited either directly or through the donor indicating photoinduced electron transfer. The results of fluorescence quenching due to TCNQ are compared with another acceptor (viologen) which does not show any CT interaction with the donor.
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